JP2012197057A - Motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motorcycle that can expand a longitudinal length of a flat foot board, while securing rigidity of a vehicle body frame.SOLUTION: In a vehicle body frame 2 of the motorcycle, right and left down frame parts 22a and 22b are connected to the right and left lateral parts of a head pipe part 21 respectively and extend downward on the right and left sides from the head pipe part 21. right and left reinforcement frame parts 23a and 23b are connected to the right and left down frame parts 22a and 22b respectively, are bent rearward and have stiffness greater than that of the right and left down frame parts 22a and 22b. Right and left under frame parts 24a and 24b are connected to the right and left reinforcement frame parts 23a and 23b respectively and are extended rearward. Moreover, the vehicle body frame 2 does not have the frame extended from the flat foot board downward from the head pipe part 21 between the right and left down frame parts 22a and 22b in the vehicle width direction.

Description

  The present invention relates to a motorcycle.

  Some motorcycles have a footboard for placing a passenger's foot in front of the seat. For example, a scooter type motorcycle disclosed in Patent Document 1 includes a flat footboard formed flat in the vehicle width direction. Further, this motorcycle has a body frame. The body frame includes a head pipe, left and right down frame portions, left and right lower frame portions, left and right rising frame portions, left and right seat rail portions, a connection frame, and a center frame. The down frame portion extends downward from the head pipe. The lower frame portion extends rearward from the lower portion of the down frame portion, and is disposed below the flat footboard. The rising frame portion extends upward from the rear portion of the down frame portion. The seat rail portion extends rearward from the upper portion of the rising frame portion, and is disposed below the seat. The front part of the connection frame is connected to the lower parts of the left and right down frame parts. Further, the rear part of the connecting frame is connected to the lower part of the left and right rising frame parts. The center frame is disposed across the head pipe and the connecting frame.

JP 2006-298356 A

  As described above, in a motorcycle including a flat footboard, in order to dispose the flat footboard at a low position, it is necessary to dispose the lower frame disposed below the flat footboard as low as possible. However, as shown in FIG. 17, in the motorcycle 100, a load A <b> 2 directed rearward is generated in the head pipe 301 of the vehicle body frame 300 due to the load A <b> 1 applied to the front wheels 200 from the front of the vehicle body. As described above, in the motorcycle including the flat hood board 400, the lower frame 302 is arranged as low as possible. Therefore, a large moment of force is generated in the portion between the lower frame 302 and the down frame 303 by the load A2. Will occur. Therefore, in the motorcycle 100, by providing the center frame 304 and the connecting frame 305, the load A2 applied to the vehicle body frame 300 is supported, thereby ensuring the rigidity of the vehicle body frame 300.

  Here, in order to improve passenger comfort, it is desired to increase the front and rear length of the flat footboard. In particular, it is desired to increase the longitudinal length of the central portion in the vehicle width direction of the flat footboard. However, in the conventional motorcycle as described above, there is a center frame that is indispensable for ensuring the rigidity of the body frame, so it is not easy to increase the front and rear length of the center portion of the flat footboard. Absent.

  An object of the present invention is to provide a motorcycle capable of expanding the front and rear length of a flat footboard while ensuring the rigidity of the body frame.

  The motorcycle according to the first aspect of the present invention includes a body frame, a steering shaft, a front fork, a front wheel, a seat, and a flat footboard. The vehicle body frame includes a head pipe portion, a left down frame portion, a right down frame portion, a left reinforcing frame portion, a right reinforcing frame portion, a left under frame portion, and a right under frame portion. The head pipe portion is located at the center of the vehicle body in the vehicle width direction. The left down frame portion is connected to the left side portion of the head pipe portion and extends downward on the left side from the head pipe portion. The right down frame part is connected to the right side part of the head pipe part and extends downward on the right side from the head pipe part. The left reinforcing frame part is connected to the left down frame part and is bent rearward. The left reinforcing frame part has higher rigidity than the left down frame part. The right reinforcing frame part is connected to the right down frame part and is bent rearward. The right reinforcing frame part has higher rigidity than the right down frame part. The left underframe portion is connected to the left reinforcing frame portion and extends rearward. The right underframe portion is connected to the right reinforcing frame portion and extends rearward. The steering shaft is inserted into the head pipe portion. The front fork is connected to the lower part of the steering shaft. The front wheel is supported by the lower part of the front fork. The seat is located behind the head pipe portion and is supported by the body frame. The flat footboard is located between the front wheel and the seat in the front-rear direction. The flat footboard is positioned below the seat and above the left underframe portion and the right underframe portion. Further, the vehicle body frame does not have a frame extending downward from the flat footboard from the head pipe portion between the left down frame portion and the right down frame portion in the vehicle width direction.

  The motorcycle according to the second aspect of the present invention is the motorcycle according to the first aspect, and each of the left reinforcing frame portion and the right reinforcing frame portion has a pipe-like member and a plate-like member. The plate-like member is arranged so as to intersect the pipe-like member over the radial direction of the pipe-like member.

  The motorcycle according to the third aspect of the present invention is the motorcycle according to the second aspect, and the area of the plate member in plan view is smaller than the area of the plate member in side view.

  A motorcycle according to a fourth aspect of the present invention is the motorcycle according to the first aspect, wherein the upper part of the left down frame part and the upper part of the left reinforcing frame part are at least partially in the front-rear direction in a side view. Overlap each other. Further, the upper part of the right down frame part and the upper part of the right reinforcing frame part at least partially overlap each other in the front-rear direction in a side view.

  A motorcycle according to a fifth aspect of the present invention is the motorcycle according to the first aspect, further comprising a battery. The battery is disposed between the left down frame portion and the right down frame portion in the vehicle width direction. Further, in the side view, the left down frame portion and the right down frame portion overlap at least a part of the battery.

  A motorcycle according to a sixth aspect of the present invention is the motorcycle according to the fifth aspect, wherein the left down frame portion and the right down frame portion extend horizontally outward from the head pipe portion. Respectively.

  A motorcycle according to a seventh aspect of the present invention is the motorcycle according to the first aspect, wherein the front edge of the flat footboard has a shape in which a central portion in the vehicle width direction is recessed forward.

  A motorcycle according to an eighth aspect of the present invention is the motorcycle according to the first aspect, wherein the front edge of the flat footboard has a linear shape extending in the vehicle width direction.

  A motorcycle according to a ninth aspect of the present invention is the motorcycle according to the first aspect, wherein the center of the front edge of the flat footboard in the vehicle width direction is the left reinforcing frame portion and the right reinforcing frame in a side view. Overlapping the part.

  A motorcycle according to a tenth aspect of the present invention is the motorcycle according to the first aspect, wherein the front fork has a suspension device. The suspension device supports the front wheel. Further, at least in a state where the suspension device is maximally contracted, the front wheel overlaps the left down frame portion and the right down frame portion in a side view.

  In the motorcycle according to the first aspect of the present invention, the vehicle body frame has a frame extending downward from the flat footboard from the head pipe portion between the left down frame portion and the right down frame portion in the vehicle width direction. Not done. That is, the vehicle body frame does not have a center frame of a conventional motorcycle. For this reason, the front-rear length of the flat footboard can be increased. In addition, left and right reinforcing frame portions are respectively disposed between the left and right down frame portions and the left and right under frame portions. For this reason, the load applied between the down frame portion and the under frame portion can be supported by the reinforcing frame portion. Therefore, even if the body frame does not have the center frame of the conventional motorcycle, the rigidity of the body frame can be ensured. As described above, in the motorcycle according to this aspect, it is possible to ensure both the rigidity of the body frame and the expansion of the front and rear length of the flat footboard.

  In the motorcycle according to the second aspect of the present invention, the left and right reinforcing frame portions can obtain higher rigidity by the plate-like members.

  In the motorcycle according to the third aspect of the present invention, the left and right reinforcing frame portions can obtain higher rigidity with respect to the direction in which the reinforcing frame portions are bent when a load from the front of the vehicle body is applied to the front wheels. it can.

  In the motorcycle according to the fourth aspect of the present invention, the down frame portion extends in a direction close to vertical. For this reason, a wide space can be secured at a position behind the down frame portion and above the flat footboard.

  In the motorcycle according to the fifth aspect of the present invention, the space between the left and right down frame portions is used as a battery storage space. For this reason, compared with the case where a battery is arrange | positioned under the flat footboard, a flat footboard can be arrange | positioned low. Thereby, the space on a flat footboard can be ensured widely. Moreover, compared with the case where a battery is arrange | positioned under the flat footboard, a battery can be arrange | positioned in a high position. For this reason, it can suppress that a battery gets wet with the water on a road. Or, compared with the case where the battery is arranged under the seat, a large storage space under the seat can be secured. In addition, since at least a part of the battery overlaps with the left down frame portion and the right down frame portion in a side view, the rearward protrusion of the battery can be suppressed. Thereby, the boarding space ahead of the seat can be secured widely in the vehicle front-rear direction.

  In the motorcycle according to the sixth aspect of the present invention, a wide space is secured between the left and right down frame portions. For this reason, the space for accommodating a battery can be ensured widely.

  In the motorcycle according to the seventh aspect of the present invention, a wide space can be secured in the center portion of the flat footboard in the vehicle width direction.

  In the motorcycle according to the eighth aspect of the present invention, the front edge of the flat footboard has a linear shape extending in the vehicle width direction. Therefore, compared with the case where the front edge of the flat footboard has a shape projecting rearward in the central portion in the vehicle width direction, a wide space can be secured in the central portion in the vehicle width direction of the flat footboard.

  In the motorcycle according to the ninth aspect of the present invention, a wide space can be secured in the center portion of the flat footboard in the vehicle width direction.

  In the motorcycle according to the tenth aspect of the present invention, the longitudinal length of the vehicle body can be reduced. Further, since the body frame does not have a frame corresponding to a conventional center frame, it is possible to prevent the front wheel and the body frame from interfering with each other even when the front wheel is close to the body frame in the front-rear direction.

1 is a side view of a motorcycle according to an embodiment. 1 is a front view of a motorcycle according to an embodiment. The perspective view of a vehicle body frame. The top view of a vehicle body frame. The side view of a vehicle body frame. The figure which shows the front part of a vehicle body frame when it sees from the direction where the center axis line of a head pipe part is extended. The enlarged side view of the left reinforcement frame part. AA sectional view and BB sectional view in FIG. The perspective view which shows a front vehicle body cover part. The enlarged side view which shows a part of front vehicle body cover part. XI-XI sectional drawing in FIG. XII-XII sectional drawing in FIG. The figure which looked at the back cover part from back. The top view of the motorcycle concerning this embodiment. The schematic diagram which shows the effect | action of a 2nd reinforcement frame part. The perspective view which shows the front vehicle body cover part which concerns on other embodiment. The side view which shows the vehicle body frame of the motorcycle which concerns on a prior art.

  Hereinafter, a motorcycle according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a motorcycle 1 according to this embodiment. FIG. 2 is a front view of the motorcycle 1. The motorcycle 1 is a scooter type motorcycle. The motorcycle 1 includes a vehicle body frame 2, a steering shaft 3, a front fork 4, a front wheel 5, a seat 6, an engine unit 7, a rear wheel 8, and a vehicle body cover 9. In the following description, the front-rear direction refers to the front-rear direction of the vehicle body as viewed from the rider seated on the seat 6. The left-right direction refers to the left-right direction of the vehicle body as viewed from the rider seated on the seat 6.

  Most of the body frame 2 is formed of an iron pipe. The vehicle body frame 2 includes a head pipe portion 21, a down frame portion 22, a first reinforcing frame portion 23, an under frame portion 24, a second reinforcing frame portion 25, and a rear frame portion 26.

  The head pipe portion 21 is located at the center of the vehicle body in the vehicle width direction. A steering shaft 3 is rotatably inserted into the head pipe portion 21. A handle 12 is connected to the upper portion of the steering shaft 3. As shown in FIG. 2, the handle 12 includes a handle bar 120 and left and right handle grips 121 and 122. The handle bar 120 is connected to the upper part of the steering shaft 3. The left and right handle grips 121 and 122 are attached to the left and right ends of the handle bar 120, respectively. A retractable front fork 4 is connected to the lower portion of the steering shaft 3. The front fork 4 has a suspension device 11. A front wheel 5 is rotatably supported at a lower portion of the suspension device 11.

  FIG. 3 is a perspective view of the vehicle body frame 2. FIG. 4 is a plan view of the body frame 2. FIG. 5 is a side view of the vehicle body frame 2. FIG. 6 is a view showing the front portion of the vehicle body frame 2 when viewed from the direction in which the central axis of the head pipe portion 21 extends. As shown in FIGS. 3 to 6, a down frame portion 22 is connected to the head pipe portion 21. The down frame portion 22 extends downward from the head pipe portion 21. In the present specification, “extending in the vertical direction” is not limited to extending in the vertical direction. “Extending in the vertical direction” means that the smaller one of the angles formed with the vertical direction is 45 ° or less. In other words, “extending in the vertical direction” includes the case of extending in a direction inclined with respect to the vertical direction. Further, “extending in the front-rear direction” is not limited to extending in parallel in the front-rear direction. “Extending in the front-rear direction” means that the smaller one of the angles formed with the horizontal direction is 45 ° or less. That is, “extending in the front-rear direction” includes the case of extending in a direction inclined with respect to the horizontal direction.

  The down frame portion 22 does not have a portion located at the center of the vehicle body frame 2 in the vehicle width direction. That is, the down frame portion 22 does not have a portion extending downward from the head pipe portion 21 at the center of the vehicle body frame 2 in the vehicle width direction. Specifically, the down frame unit 22 includes a right down frame unit 22a and a left down frame unit 22b.

  The right down frame portion 22 a is connected to the right side portion of the head pipe portion 21. The right down frame portion 22a extends substantially horizontally from the upper end portion of the head pipe portion 21 toward the right side, then bends in the middle, and then extends downward from the head pipe portion 21 on the right side. . The upper part and the lower part of the right down frame part 22a at least partially overlap each other in the front-rear direction in a side view. Specifically, the right down frame portion 22a includes a first portion 22a1 and a second portion 22a2. The first portion 22a1 extends outward from the head pipe portion 21, that is, toward the right side. As shown in FIG. 2, the portion connected to the head pipe portion 21 of the first portion 22 a 1 extends substantially horizontally from the head pipe portion 21. However, the entire first portion 22a1 is slightly inclined outward and downward in a front view. The second portion 22a2 extends downward from the right end portion of the first portion 22a1.

  The left down frame portion 22 b is connected to the left side portion of the head pipe portion 21. The left down frame portion 22b extends from the upper end portion of the head pipe portion 21 substantially horizontally toward the left side, then bends in the middle, and then extends downward from the head pipe portion 21 on the left side. . The upper part and the lower part of the left down frame part 22b partially overlap each other in the front-rear direction in a side view. Specifically, the left down frame portion 22b includes a first portion 22b1 and a second portion 22b2. The first portion 22b1 extends outward from the head pipe portion 21, that is, toward the left side. As shown in FIG. 2, the portion of the first portion 22 b 1 connected to the head pipe portion 21 extends substantially horizontally from the head pipe portion 21. However, the entire first portion 22b1 is slightly inclined outward and downward in a front view. The second portion 22b2 extends downward from the left end portion of the first portion 22b1.

  As shown in FIG. 2, the left and right down frame portions 22 a and 22 b are arranged so as not to overlap the front wheel 5 when viewed from the front. In other words, the left and right down frame portions 22a and 22b are arranged at positions different from the front wheels 5 in the vehicle width direction. Specifically, the right down frame portion 22a is disposed on the right side of the front wheel 5 in the vehicle width direction. On the other hand, the left down frame portion 22b is disposed on the left side of the front wheel 5 in the vehicle width direction.

As shown in FIG. 1, the left and right down frame portions 22 a and 22 b are front wheels 5 (hereinafter referred to as “normal front wheels 5”) when the motorcycle 1 is stopped horizontally when viewed from the side. There is no overlap. Further, a front wheel 5 ′ indicated by a two-dot chain line in FIG. 1 indicates a position of the front wheel 5 when the front fork 4 is contracted to the maximum. With the front fork 4 contracted to the maximum, the front wheel 5 'overlaps with the left and right down frame portions 22a and 22b in a side view. That is, at least a part of the front wheel 5 ′ is located between the left and right down frame portions 22a and 22b in the vehicle width direction. Note that the left and right down frame portions 22a and 22b may overlap with the front wheel 5 in a normal state in a side view. In this case, the front wheel 5 ′ with the front fork 4 contracted to the maximum is overlapped with the left and right down frame portions 22 a and 22 b in a wider range in a side view. It is located between the portion 22 and the underframe portion 24. The first reinforcing frame portion 23 includes a left reinforcing frame portion 23b and a right reinforcing frame portion 23a.

  As shown in FIG. 5, the left reinforcing frame portion 23b is connected to the left down frame portion 22b and is bent rearward. The left reinforcing frame portion 23b is a separate member from the left down frame portion 22b and a left underframe portion 24b described later. The left reinforcing frame portion 23b has higher rigidity than the left down frame portion 22b. Further, the upper portion of the left reinforcing frame portion 23b and the upper portion of the left down frame portion 22b overlap each other at least partially in the vehicle body front-rear direction in a side view. That is, in side view, at least a part of the left reinforcing frame portion 23b is positioned in front of the rear end of the upper portion of the left down frame portion 22b. Specifically, in a side view, the front end 231 of the left reinforcing frame portion 23b is located in front of the rear edge 221 of the second portion 22b2 of the left down frame portion 22b.

  The right reinforcing frame portion 23a is disposed substantially symmetrically with the left reinforcing frame portion 23b. The right reinforcing frame portion 23a is connected to the right down frame portion 22a and is bent rearward. The right reinforcing frame portion 23a is a separate member from the right down frame portion 22a and a right underframe portion 24a described later. The right reinforcing frame portion 23a has higher rigidity than the right down frame portion 22a. The positional relationship between the right reinforcing frame portion 23a and the right down frame portion is the same as the positional relationship between the left reinforcing frame portion 23b and the left down frame portion 22b described above. Accordingly, the upper part of the right reinforcing frame part 23a and the upper part of the right down frame part 22a at least partially overlap each other in the vehicle body front-rear direction in a side view. That is, at the side view, at least a part of the right reinforcing frame portion 23a is located in front of the rear end of the upper portion of the right down frame portion 22a. Specifically, in a side view, the front end of the right reinforcing frame portion 23a is positioned in front of the rear edge of the second portion 22a2 of the right down frame portion 22a.

  FIG. 7 is an enlarged side view of the left reinforcing frame portion 23b. Fig.8 (a) is AA sectional drawing in FIG. FIG. 8B is a cross-sectional view taken along the line BB in FIG. As shown in FIGS. 7 and 8, the left reinforcing frame portion 23 b includes a pipe-shaped member 37 and a plate-shaped member 38. The pipe-shaped member 37 has a bent shape. The pipe-shaped member 37 includes a first pipe portion 37a, a second pipe portion 37b, and a third pipe portion 37c. The first pipe part 37 a is the upper part of the pipe-shaped member 37. The first pipe portion 37a has an inner diameter larger than the inner diameter of the third pipe portion 37c. The first pipe portion 37a has an outer diameter larger than the outer diameter of the third pipe portion 37c. The upper end 370 of the first pipe portion 37 a has a shape inclined with respect to the axial direction of the pipe-shaped member 37. Specifically, the upper end 370 is inclined upward and rearward. The lower end portion of the left down frame portion 22b described above is inserted and fixed to the first pipe portion 37a. The second pipe portion 37 b is a rear portion of the pipe-shaped member 37. The second pipe portion 37b has an inner diameter larger than the inner diameter of the third pipe portion 37c. The second pipe portion 37b has an outer diameter larger than the outer diameter of the third pipe portion 37c. The rear end 371 of the second pipe part 37b has a shape inclined with respect to the axis of the second pipe part 37b. Specifically, the rear end 371 is inclined upward and rearward. A front end portion of a left underframe portion 24b described later is inserted into the second pipe portion 37b. The third pipe part 37 c is located between the first pipe part 37 a and the second pipe part 37 b in the direction along the axis of the pipe-shaped member 37. The third pipe portion 37c has a bent shape.

  Further, the pipe-shaped member 37 has a first convex portion 372 and a second convex portion 373. The first convex portion 372 protrudes outward from the surface of the pipe-shaped member 37. The surface of the first convex portion 372 has a flat shape. The first convex portion 372 extends along the axis of the pipe-shaped member 37. As shown in FIG. 8A, the pipe-shaped member 37 has a third convex portion 374 having the same shape as the first convex portion 372 on the opposite side of the first convex portion 372. The second convex portion 373 protrudes outward from the surface of the pipe-shaped member 37. The surface of the second convex portion 373 has a flat shape. The second convex portion 373 is disposed along the axis of the pipe-shaped member 37 with a distance from the first convex portion 372. The second convex portion 373 extends along the axis of the pipe-shaped member 37. As shown in FIG. 8B, the pipe-shaped member 37 has a fourth convex portion 375 having the same shape as the second convex portion 373 on the opposite side of the second convex portion 373. As shown in FIG. 8, the pipe-shaped member 37 includes a first half member 41 and a second half member 42. The first half member 41 and the second half member 42 have a symmetrical shape with respect to the plate member 38.

  The plate-shaped member 38 is disposed so as to intersect the pipe-shaped member 37 over the radial direction of the pipe-shaped member 37. Specifically, the plate-like member 38 is sandwiched between the first half member 41 and the second half member 42. As shown in FIG. 7, the plate-like member 38 has a bent shape like the pipe-like member 37. The plate-like member 38 is arranged in such a posture that the area of the plate-like member 38 in plan view (see FIG. 4) is smaller than the area of the plate-like member 38 in side view. A first recess 381 is formed at one end 38 a of the plate-like member 38 in the direction along the axis of the pipe-like member 37. The first recess 381 is located inside the first pipe portion 37a. The lower end portion of the left down frame portion 22 b inserted into the first pipe portion 37 a is located inside the first recess 381. A second recess 382 is formed at the other end 38 b of the plate-like member 38 in the direction along the axis of the pipe-like member 37. The second recess 382 is located inside the second pipe portion 37b. The front end portion of the left underframe portion 24b inserted into the second pipe portion 37b is located inside the second recess 382. The width of the plate member 38 is larger than the outer diameter of the pipe member 37. Accordingly, both edge portions 38 c and 38 d of the plate-like member 38 extending along the axial direction of the pipe-like member 37 protrude outward from the surface of the pipe-like member 37. The plate-like member 38 and the pipe-like member 37 are fixed by welding the protruding portion. Thus, since the plate-shaped member 38 has a shape protruding from the surface of the pipe-shaped member 37, welding of the plate-shaped member 38 and the pipe-shaped member 37 is facilitated.

  As shown in FIG. 8A, the pipe-shaped member 37 is formed with a first through hole 376 that penetrates the first convex portion 372 and the third convex portion 374. A third through hole 383 is formed at a position of the plate-like member 38 facing the first through hole 376. Further, as shown in FIG. 8B, the pipe-shaped member 37 is formed with a second through hole 377 that penetrates the second convex portion 373 and the fourth convex portion 375. A fourth through hole 384 is formed at a position facing the second through hole 377 in the plate member 38. In these through holes, pins for positioning the first half member 41, the plate-like member 38, and the second half member 42 are inserted when the left reinforcing frame portion 23b is manufactured. The first half member 41, the plate-like member 38, and the second half member 42 are integrally fixed by welding in a state where they are positioned by pins.

  Since the right reinforcing frame portion 23a has a symmetrical structure with the left reinforcing frame portion 23b, a detailed description of the right reinforcing frame portion 23a is omitted. As shown in FIG. 3, the left reinforcing frame portion 23b and the right reinforcing frame portion 23a are connected by a connecting frame portion 27a.

  The underframe portion 24 is connected to the lower end portion of the down frame portion 22 via the first reinforcing frame portion 23. Specifically, the underframe portion 24 includes a right underframe portion 24a and a left underframe portion 24b. The right under frame portion 24a is connected to the right reinforcing frame portion 23a. The right under frame portion 24a extends substantially horizontally from the right reinforcing frame portion 23a toward the rear. The left under frame portion 24b is connected to the left reinforcing frame portion 23b. The left under frame portion 24b extends substantially horizontally from the left reinforcing frame portion 23b toward the rear. As shown in FIGS. 3 and 4, the center portions of the left and right underframe portions 24a and 24b in the front-rear direction and the above-described connecting frame portion 27a are connected by connecting frame portions 27b and 27c.

  The rear frame portion 26 is connected to the rear end portion of the underframe portion 24. The rear frame portion 26 extends upward from the rear end portion of the underframe portion 24. Specifically, the rear frame portion 26 includes a right rear frame portion 26a and a left rear frame portion 26b.

  The right rear frame portion 26a is connected to the rear end portion of the right under frame portion 24a. The right rear frame portion 26a extends obliquely upward from the rear end portion of the right under frame portion 24a toward the rear. Specifically, the right rear frame portion 26a extends substantially perpendicularly from the rear end portion of the right underframe portion 24a, then bends backward in the middle, and then extends obliquely upward toward the rear. That is, as shown in FIG. 3, the right rear frame portion 26a includes a first portion 26a1 extending substantially perpendicularly from the rear end portion of the right underframe portion 24a, and a first portion extending obliquely upward from the first portion 26a1 toward the rear. And two portions 26a2.

  The left rear frame portion 26b is connected to the rear end portion of the left underframe portion 24b. The left rear frame portion 26b extends obliquely upward from the rear end portion of the left under frame portion 24b toward the rear. Specifically, as shown in FIG. 5, the left rear frame portion 26b extends substantially vertically from the rear end portion of the left underframe portion 24b, then bends back in the middle, and then obliquely upwards toward the rear. It extends to. That is, the left rear frame portion 26b includes a first portion 26b1 extending substantially perpendicularly from the rear end portion of the left underframe portion 24b, and a second portion 26b2 extending obliquely upward from the first portion 26b1 toward the rear. ing.

  As shown in FIG. 3, the first portion 26a1 of the right rear frame portion 26a and the first portion 26b1 of the left rear frame portion 26b are connected by connecting frame portions 28a and 28b. Further, the rear end portion of the right rear frame portion 26 a and the rear end portion of the left rear frame portion 26 b are connected by a connecting frame portion 29.

  A right bracket 29a is attached to the right under frame portion 24a and the right rear frame portion 26a. A left bracket 29b is attached to the left under frame portion 24b and the left rear frame portion 26b. A pivot shaft (not shown) extending in the vehicle width direction is attached to the left and right brackets 29a and 29b. A unit swing type engine unit 7 shown in FIG. 1 is swingably attached to the pivot shaft. The engine unit 7 has an output shaft (not shown). A rear wheel 8 is rotatably supported on the output shaft.

  The second reinforcing frame portion 25 is disposed around the head pipe portion 21. The second reinforcing frame portion 25 includes a first cross frame portion 31, a second cross frame portion 32, a first connection frame portion 33, and a second connection frame portion 34. Each of the first and second cross frame portions 31 and 32 connects the right down frame portion 22a and the left down frame portion 22b. The rigidity of the first and second cross frame parts 31, 32 is set lower than the rigidity of the left and right down frame parts 22a, 22b.

  As shown in FIG. 6, the first cross frame portion 31 passes through the rear of the head pipe portion 21 and the right down frame portion 22a and the left down frame when viewed from the direction in which the central axis C of the head pipe portion 21 extends. The part 22b is connected. Further, the first cross frame portion 31 is also connected to the head pipe portion 21. The first cross frame portion 31 is located behind the head pipe portion 21 and indirectly to the head pipe portion 21 via the first connection frame portion 33 connected to the lower end portion of the head pipe portion 21. It is connected. The first cross frame portion 31 is formed in a linear shape.

  As shown in FIG. 5, the first cross frame portion 31 is disposed in a region L from the upper end to the lower end of the head pipe portion 21 in the direction in which the central axis C of the head pipe portion 21 extends. And both the connection part 33a of the 1st connection frame part 33 and the head pipe part 21, and the connection part 33b of the 1st connection frame part 33 and the 1st cross frame part 31 are located in the area | region L. Yes.

  As shown in FIG. 6, the second cross frame portion 32 passes through the front of the head pipe portion 21 and the right down frame portion 22 a and the left down frame when viewed from the direction in which the central axis C of the head pipe portion 21 extends. The part 22b is connected. Further, the second cross frame portion 32 is also connected to the head pipe portion 21. The second cross frame portion 32 is located in front of the head pipe portion 21 and indirectly to the head pipe portion 21 via the second connection frame portion 34 connected to the lower end portion of the head pipe portion 21. It is connected. As shown in FIG. 5, the connection part between the second cross frame part 32 and the head pipe part 21, that is, the connection part 34 a between the second cross frame part 32 and the second connection frame part 34 is located in the region L. is doing. Further, the connection portion 34 b between the second connection frame portion 34 and the head pipe portion 21 is located in the region L. On the other hand, the connection portion between the second cross frame portion 32 and the left and right down frame portions 22a and 22b is located outside the region L. In other words, only the upper part of the second cross frame portion 32 is disposed in the region L.

  As shown in FIG. 1, the seat 6 is disposed above the rear frame portion 26. The seat 6 is located behind the head pipe portion 21. The seat 6 is supported by the body frame 2. Specifically, the seat 6 is directly or indirectly attached to the left and right rear frame portions 26a and 26b. As shown in FIG. 1, the seat 6 is a tandem seat that can be seated by two persons, a rider and a passenger.

  The vehicle body cover 9 includes a front vehicle body cover portion 51, a rear vehicle body cover portion 52, and an under cover portion 53. The front vehicle body cover portion 51 mainly covers the periphery of the head pipe portion 21. The front vehicle body cover part 51 has a front cover part 54 and a back cover part 55. The front cover part 54 covers the front of the head pipe part 21. The upper part 54 a of the front cover part 54 is located above the front wheel 5. A headlight 61 is provided on the upper part 54 a of the front cover part 54. A lower portion 54 b of the front cover portion 54 is located behind the front wheel 5. The center part in the vehicle width direction of the lower part 54b of the front cover part 54 has a shape recessed backward so as not to interfere with the front wheel 5. A front fender 54 c is disposed above the front wheel 5.

  The back cover part 55 covers the back of the head pipe part 21. FIG. 9 is a perspective view showing the front vehicle body cover 51. FIG. 10 is an enlarged side view showing a part of the front vehicle body cover portion 51. In FIG. 10, a solid line 551 and a broken line 552 are lines indicating the shape of the center of the back cover portion 55 in the vehicle width direction, and correspond to the two-dot chain line 550 virtually illustrated in FIG. Hereinafter, the two-dot chain line 550 illustrated in FIG. 9 is referred to as a “back surface center line 550”. The solid line 551 shown in FIG. 10 is referred to as “the upper part 551 of the back surface center line 550”. Also, the broken line 552 shown in FIG.

  The upper part 551 of the back center line 550 is inclined downward and forward. A lower portion 552 of the back center line 550 is positioned in front of a left rear edge line 553 described later. A lower portion 552 of the back center line 550 has a shape that gently curves in a convex manner toward the rear. The lower end portion of the lower portion 552 of the back center line 550 is inclined downward and forward. 11 is a cross-sectional view taken along line XI-XI in FIG. Specifically, FIG. 11 shows a cross section CS1 (hereinafter referred to as “first cross section CS1”) by a horizontal plane passing through the rear end P2 of the front wheel 5 ′ in a state where the front fork 4 is contracted to the maximum. 12 is a cross-sectional view taken along line XII-XII in FIG. Specifically, FIG. 12 shows a cross section CS2 (hereinafter referred to as “second cross section CS2”) by a horizontal plane passing through the center P1 in the vehicle width direction of a front edge 530 of the flat foot board 53a described later. That is, the second cross section CS2 shown in FIG. 12 is located below the first cross section CS1 shown in FIG. As shown in FIGS. 11 and 12, a center portion 55a in the vehicle width direction at the lower portion of the back cover portion 55 (hereinafter referred to as “back center portion 55a”) has a shape recessed forward. . Further, a distance Da2 in the front-rear direction between the lower portion 54b of the front cover portion 54 in the second cross section CS2 and the center in the vehicle width direction of the rear central portion 55a is equal to the lower portion 54b of the front cover portion 54 in the first cross section CS1. The distance Da1 in the front-rear direction between the rear center portion 55a and the center in the vehicle width direction is smaller. Furthermore, the distance Dw2 between the center in the vehicle width direction of the back surface central portion 55a in the second cross section CS2 and the front wheel 5 in the normal state is the center in the vehicle width direction of the back center portion 55a in the first cross section CS1 and the normal state. It is smaller than the distance Dw1 between the front wheels 5. As described above, in the motorcycle 1 according to the present embodiment, the body frame 2 does not have a frame corresponding to a conventional center frame, and therefore, the shape of the back cover portion 55 that is recessed forward in the back center portion 55a. Can be. With such a shape of the back cover part 55, the passenger space located behind the back center part 55a of the back cover part 55 can be expanded in the front-rear direction. Further, since the rear center portion 55a can be disposed close to the front wheel 5, the front portion of the motorcycle 1 including the front wheel 5 can be reduced in size.

  A rear right side portion 55b and a rear left side portion 55c are respectively arranged on the left and right sides of the rear central portion 55a. The rear right side portion 55b is disposed behind the right reinforcing frame portion 23a. The back left side 55c is arranged behind the left reinforcing frame 23b. The back right side 55b and the back left side 55c have a shape protruding rearward from the back center 55a. 9 and 10, a solid line 553 is a line (hereinafter referred to as “left rear edge line 553”) indicating the shape of the rear edge in the side view of the rear left side portion 55c. A lower portion 554 of the left rear edge line 553 is positioned in front of the rear end 555 of the left rear edge line 553. In FIG. 9, a position corresponding to the lower part 554 is virtually indicated by a two-dot chain line. A solid line 556 indicates a line (hereinafter, referred to as a “left outer line 556”) indicating a shape of a portion located on the outermost side of the back cover portion 55. In the side view, the left outer line 556 is located in front of the left rear edge line 553.

  Further, as shown in FIGS. 11 and 12, the distance Db2 in the front-rear direction between the rear right side portion 55b and the right reinforcing frame portion 23a in the second cross section CS2 is equal to the rear right side portion 55b and the right reinforcing portion in the first cross section CS1. It is smaller than the distance Db1 in the front-rear direction between the frame portion 23a. Similarly, the distance Dc2 in the front-rear direction between the back left portion 55c and the left reinforcing frame portion 23b in the second cross section CS2 is the front-rear direction between the back left portion 55c and the left reinforcing frame portion 23b in the first cross section CS1. Is smaller than the distance Dc1. In other words, the back protrusion right side 55b and the back left side 55c in the second cross section CS2 located below the first cross section CS1 are projected rearwardly in the first cross section CS1. It is smaller than the size of the rearward protrusion of 55c. With such a shape of the back cover portion 55, it is possible to expand the occupant space located behind the back right side portion 55b and the back left side portion 55c in the front-rear direction.

  As shown in FIG. 9, the back cover part 55 has a lid member 56. The lid member 56 is located at the center of the back cover portion 55 in the vehicle width direction. The lid member 56 is detachably attached to the other part of the back cover part 55. FIG. 13 is a view of the back cover portion 55 as viewed from the back, and the back cover portion 55 is indicated by a two-dot chain line. As shown in FIG. 13, a battery 43 is disposed in front of the lid member 56. The battery 43 is disposed between the left down frame portion 22b and the right down frame portion 22a in the vehicle width direction. As shown in FIG. 1, the left down frame portion 22 b and the right down frame portion 22 a overlap a part of the battery 43 in a side view.

  As shown in FIG. 1, the rear vehicle body cover portion 52 is located below the seat 6. The rear vehicle body cover portion 52 covers the front and both sides of the rear frame portion 26 disposed below the seat 6. A fuel tank 57 is disposed below the seat 6. The fuel tank 57 is disposed between the second portions 26a2 and 26b2 (see FIG. 3) of the left and right rear frame portions 26a and 26b.

  The under cover portion 53 is located between the front vehicle body cover portion 51 and the rear vehicle body cover portion 52. The under cover portion 53 connects the front vehicle body cover portion 51 and the rear vehicle body cover portion 52. The under cover portion 53 has a flat foot board 53a. The flat foot board 53a is attached to the left and right underframe portions 24a and 24b. The flat foot board 53a is located between the front wheel 5 and the seat 6 in the front-rear direction. The flat foot board 53 a is located below the seat 6. The flat foot board 53a is a surface on which a rider seated on the seat 6 places his / her foot while traveling. The flat foot board 53a is located above the left and right underframe portions 24a and 23b. The flat foot board 53a is located between the down frame part 22 and the rear frame part 26 in the front-rear direction. The flat foot board 53a is formed flat across the vehicle width direction.

  As shown in FIG. 9, the front edge 530 of the flat foot board 53 a is connected to the lower end of the back cover 55 described above. Accordingly, FIG. 12 shows the shape of the front edge 530 of the flat footboard 53a together with the shape of the lower end of the back cover 55. The front edge 530 of the flat foot board 53a has a shape in which a central portion in the vehicle width direction is recessed forward. Specifically, the front edge 530 of the flat foot board 53a has a front edge center portion 531, a front edge right side portion 532, and a front edge left side portion 533. The front edge center portion 531 is disposed between the front edge right side portion 532 and the front edge left side portion 533 in the vehicle width direction. The center P1 of the front edge center portion 531 in the vehicle width direction (hereinafter referred to as “front edge center point P1”), that is, the center of the front edge 530 of the flat footboard 53a in the vehicle width direction is the front edge right side portion 532. The rear end and the front edge left side portion 533 are disposed in front of the rear end. As shown in FIG. 10, the front edge center point P1 overlaps the left and right reinforcing frame portions 23a and 23b in a side view. The front edge center point P1 overlaps the lower portion of the left outer line 556 in a side view. Further, as shown in FIG. 1, the front edge center point P <b> 1 is located in front of the above-described left rear edge line 553 in the side view. More specifically, the front edge center point P1 is located in front of the lower part 554 of the left rear edge line 553 described above in a side view. The front edge center point P1 is located below the rear end P2 of the front wheel 5 'when the front fork 4 is contracted to the maximum. Furthermore, as shown in FIG. 1, the front edge center point P <b> 1 is positioned in front of the rear end of the upper portion 551 of the back surface center line 550 in the side view. FIG. 14 is a top view of the motorcycle 1. As shown in FIG. 14, the entire front edge 530 of the flat foot board 53 a is positioned in front of the handle grips 121 and 122.

  The motorcycle 1 according to this embodiment has the following characteristics.

  The vehicle body frame 2 does not have a frame that extends downward from the flat footboard 53a from the head pipe portion 21 between the left down frame portion 22b and the right down frame portion 22a in the vehicle width direction. That is, the vehicle body frame 2 does not have a center frame of a conventional motorcycle. For this reason, the front-rear length of the flat footboard 53a can be enlarged.

  Further, the body frame 2 of the present embodiment is reinforced by the first reinforcing frame portion 23 even without the center frame. Specifically, the left and right reinforcing frame portions 23a and 23b are respectively disposed between the left and right down frame portions 22a and 22b and the left and right under frame portions 24a and 24b. For this reason, the load applied between the down frame portion 22 and the under frame portion 24 can be supported by the reinforcing frame portion 23. The connecting frame portion 27a is fixed to the left and right reinforcing frame portions 23a and 23b. For this reason, the load transmitted from the connection frame part 27a can also be supported by the left and right reinforcing frame parts 23a and 23b. Therefore, even if the body frame 2 does not have the center frame of the conventional motorcycle, the rigidity of the body frame 2 can be sufficiently ensured.

  Each of the left and right reinforcing frame portions 23 a and 23 b includes a pipe-shaped member 37 and a plate-shaped member 38. Therefore, high rigidity can be obtained by the plate-like member 38. In particular, the plate-like member 38 is arranged in such a posture that the area of the plate-like member 38 in plan view is smaller than the area of the plate-like member 38 in side view. Therefore, the left and right reinforcing frame portions 23a and 23b have high rigidity against a load (see arrow A1 in FIG. 7) that bends the first pipe portion 37a rearward and the second pipe portion 37b upward. Further, the left and right reinforcing frame portions 23a and 23b have high rigidity against a load (see arrow A2 in FIG. 7) that bends the first pipe portion 37a forward and the second pipe portion 37b downward. Therefore, the vehicle body frame 2 can obtain higher rigidity in the direction in which the first reinforcing frame portion 23 is bent when a load from the front of the vehicle body is applied to the front wheels 5.

  The down frame portion 22 extends in a direction close to vertical. For this reason, a wide space can be secured at a position behind the down frame portion 22 and above the flat footboard 53a.

  A space between the left and right down frame portions 22 is used as a storage space for the battery 43. For this reason, compared with the case where the battery 43 is arrange | positioned under the flat foot board 53a, the flat foot board 53a can be arrange | positioned low. Thereby, the space on the flat foot board 53a can be ensured widely. Or compared with the case where the battery 43 is arrange | positioned under the sheet | seat 6, the storage space under the sheet | seat 6 can be ensured widely. Further, the heavy battery 43 and the fuel tank 57 are arranged separately at the front and rear of the vehicle body. For this reason, the weight balance of the motorcycle can be improved.

  The left down frame portion 22b and the right down frame portion 22a have portions extending horizontally from the head pipe portion 21 toward the outside. For this reason, a wide space is ensured between the left and right down frame portions 22. Thereby, a wide space for accommodating the battery 43 can be secured.

  As shown in FIG. 12, the front edge central portion 531 of the flat foot board 53 a is disposed in front of the rear ends of the front edge right side portion 532 and the front edge left side portion 533. As shown in FIG. 10, the front edge center point P1 overlaps with the left and right reinforcing frame portions 23a and 23b in a side view. Since the motorcycle 1 according to the present embodiment does not have the center frame of the conventional motorcycle, the front edge 530 of the flat foot board 53a can be formed to have a shape that greatly extends forward in this way. Thereby, a wide space in the front-rear direction can be secured above the flat foot board 53a.

  The front wheel 5 'when the suspension device 11 is contracted to the maximum overlaps with the left down frame portion 22b and the right down frame portion 22a in a side view. That is, the distance between the front wheel 5 and the down frame portion 22 is small in the front-rear direction. For this reason, the longitudinal length of the vehicle body can be reduced. Further, since the body frame 2 does not have a frame corresponding to a conventional center frame, even if the front wheel 5 is close to the body frame 2 in the front-rear direction, it is possible to prevent interference between the front wheel 5 and the body frame 2. it can.

  The body frame 2 is further reinforced by the second reinforcing frame portion 25 even without the center frame. Specifically, the first and second cross frame portions that pass through the front or rear of the head pipe portion 21, connect the left and right down frame portions 22 a and 22 b, and are connected to the head pipe portion 21. 31 and 32 are provided. By providing the first and second cross frame portions 31 and 32, for example, when a rearward external force is applied to the front wheel 5, the first and second cross frame portions 31 and 32 are deformed. The external force applied to the body frame 2 is alleviated. Specifically, as shown in FIG. 15, when a rearward external force is applied to the front wheel 5, the lower end portion of the head pipe portion 21 moves rearward, and the head pipe portion 21 becomes arcuate. When the head pipe portion 21 is deformed, the first and second cross frame portions 31 and 32 connected to the head pipe portion 21 are also deformed. Thereby, the external force applied to the vehicle body frame 2 is relieved. For this reason, the rigidity and strength of the vehicle body frame 2 can be sufficiently increased without providing a center frame portion for reinforcing the left and right down frame portions 22. In FIG. 15, the solid line indicates the vehicle body frame 2 in a state where no external force is applied to the front wheel 5 in the rearward direction. A broken line indicates the body frame 2 in a state where an external force is applied to the front wheel 5 in the rearward direction.

  Further, as shown in FIG. 5, the first cross frame portion 31 is located in the region L. For this reason, when an external force is applied to the head pipe portion 21, the first and second cross frame portions 31 and 32 are further easily deformed. Therefore, the external force applied to the body frame 2 can be more effectively reduced.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

  In the above embodiment, the body frame 2 is configured by fixing an iron pipe by welding, but the configuration of the body frame of the present invention is not limited to this. For example, it may be formed by casting. The body frame of the present invention is not limited to iron and may be formed of other materials. For example, the body frame may be made of aluminum or aluminum alloy, or may be made of magnesium alloy.

  The reinforcement frame part of this invention should just have rigidity higher than the down frame part 22 and the under frame part 24, and a specific structure is not restricted to the 1st reinforcement frame part 23 of said embodiment. For example, the reinforcing frame part may be constituted by a pipe that is thicker than the down frame part 22 and the under frame part 24. In addition, the reinforcing frame portion may be integrally formed by casting instead of integrating a plurality of members by welding. Further, the reinforcing frame portion may be made of a material different from that of the down frame portion 22 and the underframe portion 24, thereby having high rigidity.

  In the vehicle body frame of the present invention, the second reinforcing frame portion 25 of the above embodiment may be omitted. In addition, the configuration of the second reinforcing frame portion is not limited to that of the above embodiment. For example, the first cross frame part may be directly connected to the head pipe part without going through the first connection frame part. Similarly, the second cross frame portion may be directly connected to the head pipe portion without going through the second connection frame portion. In the above embodiment, the first cross frame portion 31 is formed in a linear shape. However, the first cross frame may be formed in a curved shape or a curved shape, for example. In this case, the first cross frame is preferably convex toward the rear when viewed from the direction in which the central axis C of the head pipe portion 21 extends.

  The flat footboard does not necessarily need to be completely flat, and may have some unevenness. The flat footboard may be a curved surface.

  When the back surface center line 550 and the flat footboard 53a are connected to form a predetermined angle in the side view as in the above embodiment (see FIG. 10), the leading edge center point P1 is You may define by the vertex of the angle | corner made by the back surface centerline 550 and the flat footboard 53a. In this case, the front edge 530 of the flat footboard 53a may be defined by an intersection line between the horizontal plane passing through the front edge center point P1 and the flat footboard 53a. Further, when the back surface center line 550 and the flat footboard 53a are connected by a gently curved surface, the front edge center point P1 may be defined by an arbitrary point on the center line in the vehicle width direction of the curved surface. .

  As shown in FIG. 16, the front edge 530 of the flat foot board 53a may have a linear shape extending in the vehicle width direction. In other words, the center portion in the vehicle width direction of the front edge 530 of the flat footboard 53a may be disposed at the same position as the side end portion in the vehicle width direction of the front edge 530 of the flat footboard 53a.

  ADVANTAGE OF THE INVENTION According to this invention, the motorcycle which can enlarge the front-back length of a flat footboard can be provided, ensuring the rigidity of a vehicle body frame.

DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body frame 3 Steering shaft 4 Front fork 5 Front wheel 6 Seat 11 Suspension device 21 Head pipe part 22a Right down frame part 22b Left down frame part 23a Right reinforcement frame part 23b Left reinforcement frame part 24a Right under frame part 24b Left Underframe portion 37 Pipe member 38 Plate member 43 Battery 53a Flat foot board

Claims (10)

A head pipe portion located at the center of the vehicle body in the vehicle width direction, a left down frame portion connected to the left side portion of the head pipe portion and extending leftward from the head pipe portion, and connected to a right side portion of the head pipe portion A right down frame part extending downward on the right side from the head pipe part, and a left reinforcing frame part connected to the left down frame part and bent rearward and having higher rigidity than the left down frame part. A right reinforcing frame portion connected to the right down frame portion and bent rearward and having higher rigidity than the right down frame portion; and a left under frame connected to the left reinforcing frame portion and extending rearward A vehicle body frame having a portion and a right under frame portion connected to the right reinforcing frame portion and extending rearward
A steering shaft inserted into the head pipe portion;
A front fork connected to a lower portion of the steering shaft;
A front wheel supported at a lower portion of the front fork;
A seat located behind the head pipe portion and supported by the body frame;
A flat footboard located between the front wheel and the seat in the longitudinal direction of the vehicle body, located below the seat and above the left underframe portion and the right underframe portion;
With
The vehicle body frame does not have a frame that extends downward from the flat footboard from the head pipe portion between the left down frame portion and the right down frame portion in the vehicle width direction.
Motorcycle. Each of the left reinforcing frame portion and the right reinforcing frame portion includes a pipe-shaped member and a plate-shaped member arranged to intersect the pipe-shaped member over the radial direction of the pipe-shaped member.
The motorcycle according to claim 1. The area of the plate member in plan view is smaller than the area of the plate member in side view,
The motorcycle according to claim 2. The upper part of the left down frame part and the upper part of the left reinforcing frame part overlap each other at least partially in the vehicle longitudinal direction in a side view,
The upper part of the right down frame part and the upper part of the right reinforcing frame part at least partially overlap each other in the vehicle body front-rear direction in a side view,
The motorcycle according to claim 1. In the vehicle width direction, the battery further includes a battery disposed between the left down frame portion and the right down frame portion,
In the side view, the left down frame part and the right down frame part overlap at least a part of the battery,
The motorcycle according to claim 1. The left down frame portion and the right down frame portion each have a portion extending horizontally from the head pipe portion toward the outside.
The motorcycle according to claim 5. The front edge of the flat footboard has a shape in which the central portion in the vehicle width direction is recessed forward.
The motorcycle according to claim 1. The front edge of the flat footboard has a linear shape extending in the vehicle width direction,
The motorcycle according to claim 1. The center in the vehicle width direction of the front edge of the flat footboard overlaps the left reinforcing frame portion and the right reinforcing frame portion in a side view,
The motorcycle according to claim 1. The front fork has a suspension device that supports the front wheel,
At least in a state where the suspension device is maximally contracted, the front wheel overlaps the left down frame part and the right down frame part in a side view.
The motorcycle according to claim 1.

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